Improvement in feed-water heaters for steam-boilers



PATENT OFFICE.

A. M. GRANGER, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN FEED-WATER. HEATERS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 4 M374, dated January26, 1864.

To all whom it may concern:

B e it known that l, A. M. GRANGER, of the city of St. Louis, in thecounty of St. Louis and State of Missouri, have invented a new andImproved Apparatus for Heating and Purifying Water for SupplyingSteam-Boilers; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawing, forming part of this specitication, said drawingrepresenting a longitudinal vertical section of a boiler having myapparatus applied.

This invention relates to the heating of the feed-water on its way fromthe feed-pump or other feeding apparatus to the mud-well or Y lower partof the boiler by exposing it in the form ot' drops or spray in directcontact with steam taken from the boiler7 thereby causing a more speedyand perfect separation of the mineral matters and other impurities thanis obtained by mea-ns at present in use.

It consists in certain devices for effecting the distribution of waterin the best practical manner within the heating-vessel.

To enable others skilled in the art to make and use my invention, I willproceed to describe it A is the boiler B, the steam-drum, and C themud-well, constructed in the manner common to those boilers which usethe water of the Mississippi river, for which my invention is moreespecially designed.

D is the vessel in which the heating of the water is effected on its Wayto the mud-well. This vessel is made of upright cylindrical form,perfectly tight, and capable ot' bearing the same pressure as theboiler. It is connected at or near its bottom with the mudwell, and itis of such height that its upper part reaches considerably above theproper level of the water in the boiler. pipe a enters the said vesselat or very near the top, and is turned downward within it. The pipe b,which admits steam to the said vessel, may be connected with it at anypoint above the highest level of the water in the boiler, and the saidpipe be connected to receive steam either directly from the boiler orfrom the main steam-pipe c, which supplies the engine, as represented.

The feedd is a basin arranged within the upper part ot' the vessel D forthe reception of the mouth of the feed-pipe, which enters the said basinat the top and dips nearly to the bottom. This basin d is surrounded byanother basin, e, which is perforated, and below the basins c and dthere are arranged a'number of perforated basins, ff, one above another,the sev eral basins being arranged as nearly as practicable in thecenter or at equal distances from all sides of the vessel D, and thewhole being either supported upon a bearer, g, arranged across thevessel D, or suspended from the top of the said vessel. The lowest ofthebasins f f should be a short distance above the proper level of thewater in the boiler.

h is a casing surrounding the basins within the vessel B to protect theinterior of the vessel from any overilow of water from the basins eff,which might injure it by sudden cooiin g and contraction. This casingshould have a space between it and the interior of the casing all aroundand suitable openings in its sides for the circulation ofthe steam.

The operation of the apparatus is as follows: The water is deliveredfrom the im` mersed mouth of thefeed-pipe ce into the basin d, fromwhich it overows gently into e, fall` ing from the perforations in thelatter and through the steam in a tine shower, and being received in theuppermost basin j', from whose perforations it drops in another showerthrough the steam into the next basin f below, and so on through thewhole series oi' basins, and from the lower basin into the body of waterin the vessel D, in which the water is always at the same level as inthe boiler. Some condensation of steam, of course, takes place, and thewater of condensation falls with the incoming water. By the time thewater has fallen from the lowest basin it is heated to such a degreethat its mineral and other immersed mouth of the feed-pipe aand theheat-3. The proteetingeasing h, applied'in com ing-Vessel D, substantially asherein speoibnation with the basins d eff' substantially ed.

2. The pcrforated basins e and f f, arranged Within the heating-vessel Dto deliver the Witnesses:

JOHN G. H. CUNNINGHAM, 1 J AMES C. ADAMS.

as and for the purpose herein set forth.

A. M. GRANGER.

Water in the form of a shower or spray, substantially as hereindescribed.

